Inspired by the regular Harper's feature, The Economist crunches some numbers on the conflict:
Total number of Israelis killed by rocket, mortar or anti-tank fire from Gaza since 2006: 47
(Source: Wikipedia. This is disputed; another source says 26)Number of Palestinians in Gaza killed by Israeli fire from April 1st 2006 to July 21st 2012: 2,879
(Source: United Nations)
A few other data points:
Number of projectiles fired at Israel from Gaza from November 13th-19th, 2012: 848
(Source: IDF)Number that did not fall in "open areas": 35
(Source: IDF)Number intercepted by Israel’s Iron Dome defence system: 302
(Source: IDF)
Full list here.